Hey all,
Im trying to upgrade my ovirt installation,
CentOS 7.2 fully updated

engine version: oVirt Engine Version: 3.6.7.5-1.el7.centos

hosts version:
OS Version:
RHEL - 7 - 2.1511.el7.centos.2.10
Kernel Version:
3.10.0 - 327.36.1.el7.x86_64
KVM Version:
2.3.0 - 31.el7_2.10.1
LIBVIRT Version:
libvirt-1.2.17-13.el7_2.5
VDSM Version:
vdsm-4.17.32-1.el7
SPICE Version:
0.12.4 - 15.el7_2.2
GlusterFS Version:
[N/A]
CEPH Version:


got the following error after deploying the backup tar (following this guide http://www.ovirt.org/documentation/migration-engine-3.6-to-4.0/)

Failed to execute stage 'Setup validation': Trying to upgrade from unsupported versions: 3.5

attaching the engine-setup answer and log

Thanks,